Home / 861,777.45-1,189,462.46-499,142.88

Finding the Fourth Proportional to 861,777.45, 1,189,462.46 and 499,142.88

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Solution

The fourth proportional to 861,777.45, 1,189,462.46 and 499,142.88 is: 688,938.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,777.45 : 1,189,462.46 = 499,142.88 : x
  2. Step 2: Convert to fraction form
    861,777.45/1,189,462.46 = 499,142.88/x
  3. Step 3: Cross multiply
    861,777.45x = 1,189,462.46 × 499,142.88
  4. Step 4: Simplify right side
    861,777.45x = 593,711,715,440.57
  5. Step 5: Solve for x
    x = 593,711,715,440.57/861,777.45
  6. Step 6: Final answer
    x = 688,938.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.